sprocket mod

Steve Norris · Post by **Steve Norris** » Mon Jun 22, 2009 7:03 pm

Heres a simple mod that i have carried out to the sprocket caps to make them easily removable (As supplied the caps are just a interference fit)

Drill and tap the final drive gear shaft to take a M4 bolt

Remove some material from the cap so that it is a nice fit in the sprocket (this is the best i can do for a lathe

)

Another shot of me removing the unwanted material

Open up the center bolt hole of the hub cap to give a clearance for a M4 bolt

now the good bit

, take a M4-25 bolt and build a blob of braze (or solder ) on the head end. Let it cool then stick it in your lathe (drill in my case) and form a nice cone as per the supplied ones.

Fit the sprocket and taper-lock

Job done, just the details to add.

Steve

Jim Slothower · Post by **Jim Slothower** » Tue Jun 23, 2009 4:54 am

Steve,

Great mod in both function and authenticity. Thanks for sharing, your Tiger is looking great so far keep the pics coming

Jim

Tim Bowman · Post by **Tim Bowman** » Tue Jun 23, 2009 5:41 am

Hi Steve

As always, clever solution done very nicely.

Tim

Adrian Harris · Post by **Adrian Harris** » Tue Jun 23, 2009 6:33 am

Great modification and I love the lateral thinking of the drill as a lathe

Adrian.

Robert E Morey · Post by **Robert E Morey** » Sun Jun 28, 2009 8:47 pm

Steve,
Clever use of the drill. Brings back a lot of memories. I nearly burned up my dads hand drill and drill press both <much to his chagrin> using them as a "lathe" when I was young. I used to make brass cannons for ship models with a file and drill long before I had a real lathe.

I recently came across another clever use of a hand drill. An ingenious german fellow using it as a poor mans spin casting machine. This guy is absolutely genious for coming up with this - a hand drill, metal cookie tin, and some silicone mold rubber - to make a fully RC 1/16 scale Famo half track by spin casting all the wheels and tracks using this machine. The model is an absolute masterpiece all being fully functional including the crane. Yes it is poweful enough to hoist the becks beer 6 pack!! Besides being a master craftsman, electronic wiz and superb inventor, this gentleman is quite the cartoonist as well. If my german was better I would at least post his name, but I could not decipher it from the build forum as I don't read or speak german. Perhaps our german builders know him? Perhaps he reads this forum? I would love to thank him for the build photos and inspiration.

I will see if I can find with the full website address (german modellers website) for those interested in seeing the whole thread.

I am posting these photos here soley in the interest of sharing some of the amazing work that can and is being done by other craftmen around the world - using a lowly hand drill and some superb ingenuity. I claim no credit for the ideas, photos or sketches. All photos and sketches are by the author and were from a publically posted website.

Sven Strobbe · Post by **Sven Strobbe** » Sun Jun 28, 2009 9:47 pm

Robert

Thanks for the post...
Realy ingenious of the man...
Curious to see where you found him or his site...

Steve

Your idea is simple but very good if you have no lathe...
I'll use the idea to polish my gunbarrel of the KT

Regards

Sven

Ad Wouterse · Post by **Ad Wouterse** » Sun Jun 28, 2009 10:01 pm

Hi guys,

Here is the link to the German forum : http://www.rcpanzer.de/apboard/thread.p ... seite=1#10
The name of the "genius" is Martin BÃ¶ttger a.k.a. Mortimer

Robert E Morey · Post by **Robert E Morey** » Mon Jun 29, 2009 6:41 pm

Ad,
Thanks for posting the link. The gent deserves better credit than I gave him!
Bob

Tim McCarthy · Post by **Tim McCarthy** » Tue Jun 30, 2009 10:04 am

Great mod I will add it to the list.
Tim